substantial aid
英 美
They've suffused the suburbs with big businesses while they've failed to provide substantial aid to meet the basic subsistence needs of city dwellers.
他们把大企业遍布于郊区，却没有提供足够的帮助来满足城市居民基本的生活需求。
There is now substantial research showing that aid is productive in countries with good policies and institutions, and those policies and institutions have recently been improving.
目前已有大量的研究结果显示，对于那些拥有良好政策和体制的国家，以及那些最近对政策和体制进行了完善的国家， 援助是富有成效的。
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